For those not in the know, engine coolant's primary function is to prevent your engine from overheating. If the coolant is too hot, your engine is far more vulnerable to a catastrophic failure.

There are, however, no guarantees that such an engine issue won't befall you even if you are changing your coolant as often ...

Related: How to Check Your Car’s Engine Coolant ... putting in fresh coolant used to be a regular maintenance item, but many current vehicles can go 100,000 miles before a flush is needed ...